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The open-circuit bias voltage can be as great as +3.5 V through
WARNING
a source resistance of 300 ohms. Such voltage levels may appear
when recalling an instrument state in which an active bias has
been stored.
The bias value that appears on the spectrum analyzer display is
NOTE
expressed in terms of short-circuit current (that is, the amount of
current that would flow if the IF line were shorted to ground). The
actual amount of current flowing into the mixer will be less.
Chapter 2
Example 8: External Millimeter Mixers (Unpreselected)
Making Measurements
107
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